Composite vitreous tile and concrete stave



April 20, 1937. P. c. FISH 2,0?7 ,750

COMPOSITE VITREOUS TILE AND CONCRETE STAVE Original Filed Aug. 1, 1931INVENTOR Perc C. FAY/1 avg/ 2 E A TORNEYj Patented Apr. 20, 1937COMPOSITE VITREOUS TILE ANDUON-J' CRETE STAVE Percy 0. Fish, Kalamazoo,Mich.

Original application August 1, 1931, Serial No. 554,430. Divided andthis application July 17,

1935, Serial No. 31,790

6 Claims.

This invention relates to improvements in tiles for stave silos and is adivision of my application Serial No. 554,430, filed August 1, 1931.

The objects of the invention are:

First, to provide staves of resistant refractory material with moldedaccurate joints therebetween.

Second, to provide a vitreous tile stave with a molded joint partfitting accurately to the proper angle and also with proper tongue andgroove or other interfitting joint part.

A tile embodying the features of my invention is illustrated in theaccompanying drawing, in which:

Fig. 1 is a perspective view of a tile.

Fig. 2 is an inside elevation of the same.

Fig. 3 is a horizontal cross section through the tile showing the formof the vitreous part and the joint part at each side.

The parts will be identified by their numerals of reference which arethe same in all the views.

I is the vitreous body or core part of the stave. 2 is the molded jointborder carrying the tongue. 3 is the mold joint border carrying thegroove correspondingto the tongue. The contact surfaces of the tongueand groove joint are at the appropriate angle with the tile to produce asilo of the required dimensions, 8, 10, 12, or feet in diameter as thecase may be.

The core is preferably of vitreous tile but may be of any resistingmaterial. The molded joints are of concrete. They may be made ofresistant material capable of being molded, like Bakelite for instance,or materials comparable to vulcanized rubber, hard or soft. I preferconcrete because of its durability, cheapnessand ease of application.

In the manufacture of silos the stave silo with the staves made of woodhas been standard and satisfactory for many years, notwithstanding thatthe action of the ensilage and the fermentive juices thereof are more orless destructive to the wood. It is possible to machine such staves toan accurate fit with the right bevel and the right 45 tongue and groove.

Concrete staves similar to the wood made in sections exactly similar tothe wood staves with end joints between the sections have been made,However, the concrete also deteriorates from the 50 reaction of thefermentive juices of the ensilage and while concrete is supposed to be amaterial that will last a lifetime it deteriorates under the action ofthese juices.

As an alternative, silos have been made up of 55 glazed vitreousbuilding tile with steel reinforcement, the tiles being laid like brickand joined together with a thin layer of mortar. This construction isexpensive both in material and in the requirement of very skilled laborto produce the same. It is subject to defects and the mortar, althoughspecially made, deteriorates and requires frequent paintings andcoatings.

The vitreous tile is especially desirable for this purpose of silostaves and I have heretofore attempted to produce the same with groundjoints; The expense of such is, I find, prohibitive, because of theheavy cost of the grinding wheels and saws and, also, because of thebreakage which seems to be quite unavoidable and great care is requiredto produce structures with satisfactory joints.

I have solved the difficulties and secured the benefit of vitreous tileby forming the joints of concrete. This I preferably do by the methoddescribed in the application Serial No. 554,430, filed August 1, 1931,of which this is a division. The same, however, can be producedin avariety of ways by any material that will freely run in a mold or iscapable of being molded in a semiplastic condition. It is an easy matterto make the edges of the tiles rough so that such molded material willbe adherent thereto. I find Portland cement mortar or concrete to be themost satisfactory material. It can be formed very readily and fiowsreadily by jogging into the mold so that only a very narrow line need beexposed at the interior of the silo to the action of the silage juices.This narrow linemay be very readily stopped with asphaltum or similarresistant mixtures introduced into the crease, preferably by a gunsimilar to a grease gun. It will be seen from this description that thebody of the stave is made of highly resistant material and that jointparts are molded thereon from material that is moldable or lends itselfto that treatment.

High grade moldable material which is resistant to the action of thejuices as I have indicated might be employed, but I find thatunnecessary where the joint is effectively made and can be closed up bya properly produced line of asphaltum or resistant material.

I desire to claim the invention specifically and. also broadly aspointed out in the appended claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. A vitreous tile and concrete stave comprising a tile base or bodywith molded concrete tongue and groove joint extensions.

2. A vitreous tile and concrete stave comprising a tile base or bodywith molded concrete joint extensions.

3. A stave consisting of a resistant body portion presenting a resistantinterior surface with molded joint borders. having contact surfaces atvappropriate angles for such staves.

4. A stave consisting of a resistant body portion presenting a resistantinterior surface with molded joint borders having contactsurfaces ofPERCY C. FISH.

